Attrition mill



L. EAUER ATTRIT'LON MILL Sept. i8 gz BAUER ATTRITION MILL Filed DeC. 27

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" b ii. bolt l? pissing throne-li the cnrs V r es ine with, or orniet es continuetions of the tacos if, und rods or studs ll threaded :it esch end to receive vnuts il, serve to conneet adjacent eers together in assembling the bases; ndditionzil 'fastening devices in the nature ot' u, pair ol rods l2, threaded :it each end to receive nuts J3, serving' to conneety the lower portions ot the walls.

Threaded on eiieh end ot the respective 'rods il is n cap-screw il upon which :ire pirotiilly mounted the cnrs l ot :i pair ot covers 16 which forni the upper portion ol the |-`grinding hetid casing; the covers being conneote'l together nt their :idjiicent edges Y lil und also being connected to the wzills J by bolts 17 pussii'ig through eiirs l5 projecting' respectively Jrein the covers und wulls. liliich o the wells 9 hns on its upper edge ai central recess 9 end eiicli ol the covers i6 has ai corresponding recess l6; the respective recesses co-zicting together to l'orin cir cular openings whose centers are. the iixes ot 'the shaft 6. rllhe opening on one side ol the nischine is closed by e cii'euhir pluto 19, se-

.Without disturbing the sliziit; ii gland 19'i being secured to the edges of the aperture about the shaft, The openingr on the opposite side ot the inzichine is closed by i i'ecd, spout 2l, which inny be of any suitable construction, an example oi which is shown and described in another application of the seid .tillen l. Daniel, Ser. litio. 549,479 lilcd April 4,1922.

ln building i single dislc niill. :is shown in Figs. 5, 6, 7 and d :i semi-circular plate 2-.5 is secured by bolts 23 to the edge of the recessed portion oin the wzill ot the baise Incinlner 21. i casing: ineinber 24rl'iiis lugs 25 which ore secured to lues 2G ou the woll tl and lugs 2i" on the pliite by bolts 28. The casing member also hns eiiis :29 which ore secured to the eers Il() previously re- :lferred to by bolt 30.

The outer sido of this casing nienibor is closed by ii laterally swingzible casing ineinber 3l having formed iis iin integral part thereof a feed spoilt This casing meinbei.' 3l is hinged at both sides so as to be opened in either direction. lt has n. pair ot' bosses 33, on each side thereof, in euch ot' which is threaded :i hinge stud Sil, the lower .lain ond of which is journsled in 1 boss l he upper bosses 35 are cast integrally with the casing ineniber 24:, while the lower bosses nre :formed on brackets 36, which rire secured to the bose 2 by the rods 37 threaded at erich endto receive nuts 38, und also by cupscrews 39 which screw into openings al() in the buse.

.llie easing member Bi is secured rigidly iii nositioi'i by bolts all .vliich project through the slotted openings #l2 in the cssing iiieniber 2l: (Fig. end also sei/tired by bolts 3 with the brackets The. casing ineniber 3l luis its inner ieee formed with a circular inished channel arranged concentric to the axis of rotation ot' the driving` shaft l5, sind in this channel is secured by bolts l@ (Fig. (i) the stiition sry grinding head, which is not shown but which is or" any lusuel ctnistruction.

ln the double dish' construct-ion ythe iisuiil leed hopper is mounted directly on top ol the" 'feed spout 2l, while in the, single disk construction a spacer t8 is secured to the casing uieinbers and 3i by bolts 49, and the feed hopper is secured to the spacer by boit 5t).

By vthe construction described, it will be seen that :i liaise structure is proitided which con be used for either the single dist; or double disk type of niill so that il it is desired to convert ii single disk into a double disk zinother baise structure can be pliiced end to end with the buse structure of the single dish niill; also, that in such conversion the casing ports 22, 24- nnd 32 of the single disk inill iniiy be discarded und new cnsinfhr ports lli, 19 und 2l be installed, Further, that reversing this operation, s, double disk mill may be readily converted into s single disk. lt will :ilso be noted that in View ot the fact that the baise structures will be exact duplicates, as to construct-ion nud finish, the asiel alignment of the sha lis und the proper fitting of the casing ports will be insured, and.y further, that any base unit may be used for either halt ot` the double disk construction, as well as for the single disk eoiiistruction, thus obviziting the necessiti-)Lof carrying in stock more than the one kind of base unit described.

Having thus described iny invention, l cliiinizl. il. unitary base ineinber for attrition inills comprising :in elongated llzitbottoni lli) base portion, having 1in integrally formed bearing supportprojecting vertically therec from, :i wall likewise formed therefrom entending inwardly from each side of said support, and bearing,r surfaces foi-ined :it the side edge of .'iiid well for the purpose specified.

:2. ln it grinding mill, e plurality of base inenibers constructed. in similarly formed units, each of said units having similarly placed bearing housings 'for supportingr ai drive shaft and corresponding points ot ntf tzichinent lor removable casing parts whereby tiny one unit muy forni the solo base for e certain type Ioit mill or be assembled with vmembers formed on said Leeaeea another unit to form the base another ltype of mill.

3. In `a machine of, the character .describe the combination .of a plurality of supporting base members, one being a du,- plicate of the other whereby they become interchangeable one for the other, abutting bases having contacting faces, bearing supports also formed on said bases, and means for securing said abutting members together.

fl. In a' machine of the character described, the combination of a -plurality of supportingl base members to support a right structure of hand and a left hand machine unit, abuttingl members at each rside y.members having vertically aligned faces, the base members and abutting members beof said base ing Vso arranged that the base members can be-interchanged, whereby either one can be used as right hand or left hand members in assembling the machine, and means for securing the abutting ends ofthe respective base members together.

5. In a grindlng mill, a base member formed as a unit capable of use as a single base structure or of being assembled end to end with another similar unit, said base structure being formed adjacent one end thereof with a supporting wall, said wall when said unit forms the sole base structure constituting a point of attachment and support for grinding casing and feed spout members, said wall being further adapted, when a pair of base units are assembled, to co-operate with the Wall of the. vadjacent; unit to form the common support for a plurality-of grinding casing and feed spout members.

6. ln a 'grinding mill, a base member 'arranged to support a longitudinal extending drive shaft, said base member having an abutment at one end whereby a pair of such members may be assembled end to end, together with means for connecting them together, with the ends of the shafts in axial alignment, said assembled base members being each formed adjacent the abut.- ting ends thereof with points of support for casing and feed spout members.

In testimony whereof, I have hereunto set my hand this 16th day of December,

LUUIS E. BAUER. 

